the body of the four americans killed in tuesday's attack in libya arrived back in the united states. nancy cordes shows us the emotional homecoming. ♪ >>> the remains of the u.s. ambassador to libya and three others carried off a military plane into a hangar where the president and other dignitaries state department staffers and victims families waited. >>> a difficult week for the state department and for our country. >>> an emotional secretary clinton paid tribute to each man. >>> sean smith joined the state department after six years in the air force. tyrone woods spanned two decades as a navy seal serving multiple tours in iraq and afghanistan glendora the went by bubka also a former steel and experience paramedic. she sate for last the ambassador she had and selected to help the libyan people build a new government >>> i was honored to know ambassador chris stevens know not just for his courage before smile and goofy but contagious for his sense of fun and that california cool. >>> president obama call the four victims patriots refused to back down in danger. >>> to you their